Printing scale



March 31, 1936.

5 Sheets-Sheet l INTO mATORNEY- Mrch 31, 1936. c. R.' DOTY Y2,036,026

PRINTINGSCALE Filed Oct. 28, 1933 5 Sheets-Sheet 2 INVENTOR A-TORNEYMarch 31, 1936. C, R, DOTY 2,036,026

' PRINTING SCALE y 'Filed oct. 23, 1935 5 sheets-sheet 6 F IGB. .A

ATTORNEY March 31 1936.

c. R. DOTY 2,036,026

PRINTING SCALE Filed OCC. 23, 1933 5 Sheets-Sheet 4 mawi- 5|*- FIGB@.lllllml m' nl I i v l mllllllllnlll IMM t) A'TToRNEY- March 3l, 1936.c. R. DoTY PRINTING I SCALE Filed oct. 2B,

1933 5 Sheets-Sheet 5 FIC-.3.11.

` ATTORNEY Patented Mar. 31, 1936 UNITED. STATES `Pri'rizru OFFICEPRINTING SCALE Application October 28, 1933, Serial No. 695,587

18 Claims.

This case relates to combined weighing and recording scales.

The object in general is to provide novel means for setting recordingmeans under control of weighing mechanism.

Further, the object is to move recorder` members under control ofmechanical load translating disks in' differential steps correspondingto but greatly magnified in relation to the differential steps ofmovement of the disks.

Still further, the object is to provide means for positively arrestingrecorder members under control of load translating disks Withoutimparting shock to said disks.

Another object is to control recording members by stepped loadtranslating disks through an intermediate stop device which has steps ofprogressively different heights corresponding to the steps of the disks.f

Still another object is to provide an intercontrol between the steppedload translating disks and weighing mechanism which will have noreactive influence on operation of the weighing mechanism. l

An object is also to provide driving means for the recorder independentof the driving means for the load translating disks and to selectivelylock the driving means in accordance with the setting of the disks.

A further object is to delay operation of the recorder for a prescribedinterval following setting of the translator disks to insure the latterbeing at true load point before exercising control of the recorder.

Various other objects and advantages of the invention will be obviousfrom the following particular description of one form of mechanismembodying the invention or from an inspection of the accompanyingdrawings; and the invention also constitutes certain new and novelfeatures of construction and combination of parts here inafter set forthand claimed.

In the drawings:

Fig. 1 is a front elevational view of the upper portions of the scale.

Fig. 2 is a section generally-along line 2-2 of Fig.`l. f '.1y Figs. 3and 4 are sections along lines 3-3 and II-e4 respectively. of fFigf-2.l'

. Fig; 5 is a circuitdiagram.. f

' Fig:- 6 is an enlarged'detail view :ofthe recorder control.' meansvandthe vload, registering lchartandwindexf. )1 'i --"-Fig..'7is asectionzalongline I-i-'I of Fig. 12.

.l Fig.. 8 is a-sectionalong line 8+f8 of Fig. '6*,zand Figsx9, l0, andllarezsections 'along'flines 3-19, LIo-f-'Imazand-IlelI; respectively,of Fig; 8:; f f

V-' "-I'he"' invention isxherein :disclosed in. connection`withzweighing mechanism such l.as shown; iny fatent No. 1,870,233,although it will be understood that the principles of the invention maybe applied to any other suitable Weighing mechanism.

Referring to Figs. l and 2, the weighing mechanism, in general,comprises draft rod I for rocking intermediate lever II counterclcckwise(as viewed in Fig. l) when a load is applied to the platform (notshown). Movement of lever II is transmitted through tape I2 to pendulumsI3 and balanced member III which carries rack I meshed with pinion I6 onshaft I1. Shaft II mounts pointer i8 for moving over annular dial chartI9 .to indicate the load. The maximum range or capacity of the Weighingmechanism is in the instant case 500 lbs.

For controlling recording means from above weighing mechanism, thefollowing is provided:

Mounted concentrically of indicating shaft I'I is sleeve shaft 22 whichcarries a rigid assembly of stepped control disks 23, 24, and 25. Sleeveshaft 22 carries pulley 26 connected by belt 2l with pulley 28 on shaft29 driven through gearing 30 from shaft 3l. Shaft 3l extends outside thefront of the housing and there carries hand wheel 32, operation ofwhich, through aforesaid connections, rotates sleeve shaft 22 and therigid assembly of stepped disks thereon.

Rotation of the disks is stopped when they reach load position. The loadposition is determined by the coincidence of a zero position of thedisks with the pointer position. When the zero position of the disksreaches the` pointer position, the disks are stopped.' For this purpose,at the zero position of the disks is arranged a photo cell control to beinfluenced by the pointer without reactive interference with theoperation of the weighing mechanism.

The photo cell control comprises photo cell 33 carried by bracket 34fixed to a side of disk 23 and lamp 35 carried by bracket 36 fixed to aside of disk 25. vExtending through the disks 23, 24, and 25 is tube 3'Iclosed at the end adjacent the lamp by compound condenser lens 38 andclosed at the end adjacent the photo cell by an opaque wall 39 having asmall tapered opening 40. Normally the light from lamp 35 is directed byreflector 42 secured -to bracket 36 towards condenser lens 38 whichfocuses the light towards opening 40, the rays converging to a point atthe end of said opening. `From the opening the rays diverge towards cell33 to activate .or energize the cell. g

Referringto the circuit diagram,'Fig, 5,l 'engergization orf-cell311%.througl'1'.amplifierA` (pref- .erablyofthe lv'jacuunri,tube type)in turn' en ergizes .relay` magnet 43 gwhichf attracts to hold controlswitch'l5 open'. 'fj t v ,v

Normally...therereethe $6117.15 .'nirjgized 'by ays; ofmlight fromlamp,.35fresulting inopeningoi control switch .45?. rIfhe cellisQdeen'erg'ied .its ariiraturejgu when -thegsteppecleontrol .23,2Lfandhave their zero position in coincidence with the load indicating pointeri8. To deenergize the cell, the light from lamp 35 is blocked when thezero position of the disks reaches the pointer position by a narrowfinger 41 having inclined sides, which is secured to the back of thepointer; Finger 41 prevents the light from reaching cell 33.Accordingly, armature M of the relay 43 drops to close control switch45.

Referring to Fig. 5, closing of switch 45 completes a circuit from theside of battery B, through. line 58, switch 45, magnet 55, line 5l, handswitch 52, and line 53 to the side of the battery.

Referring to Figs. 2 and 4, magnet 50 when energized attracts itsarmature lever 55 against resistance of spring 55 to move the toothednose 51 of the lever into locking engagement with a toothed disk 58 tostop shaft 25 carrying the disk. Shaft 29 is in the driving trainbetween hand Wheel 32 and sleeve shaft 22 and when it is stopped causesfurther rotation of the stepped disks by operation of hand wheel 32 tocease.

Disks 23, 2d, and 25 translate the load into mechanical stepequivalents,the smallest steps on disk 23 representing one-half pound divisions, thesteps on disk 24 representing ten pound divisions, and the steps on disk25 representing hundred pound divisions. Recording is effected undercontrol of the steps of said disks when a handle at the front of thescale is operated. The handle is movable back and forth through a strokeof 180 degrees defined by pins 5l. Handle 50 is fast to shaft 52 whichcarries a locking disk 53 engaged by a downwardly bentnger 55 on a lever55 underlying armature lever 5,5 of magnet 5@ and separated therefrom bya block 55 secured to lever55.

it is not desirable to operate handle 5@ until the stepped disks havebeen definitely and correctly located at the load position. These areconditions under whichthe stepped disks may be incorrectly set and undersuch conditions, handle 55 should not be released for operation.

.A setting of the stepped disks by operation of hand Wheel 52 iscompleted when the hand wheel is locked against operation by engagementof teeth 51 of lever 55 with toothed disk 55. Should the ringer 55 bereleased from disk 53 simultaneously with operation of lever 55 to lockdisk 55, then handle 55 would be released, causing the stepped disks tobe retained in position, and produce a wrong record if the stepped diskshave been incorrectly or `only momentarily set.

Some of the conditions nder which the disks 23, 25, and 25 areincorrectly or momentarily set are given below. lf the disks arenot atzero position when the Weighing operation begins, the pointer 13 willpass the photo cell control on its way to the load point, finger 41 willmomentarily intercept the light to cell 33, the cell will bedeenergized, switch 45 will close, and magnet 50 will energize to lockthe disks in position.

Again, the scale may not have come to equilibrium and pointer I8 may beoscillating when the stepped disksfare moved to the pointer by the handwheel 32. Accordingly, the photo cell 33 will be deenergized at anindeterminate point of oscillation of the pointer I8 and magnet 50 willbe energized to lock up the operating means for the stepped disks.

Another possibility is that the scale load may be varied after the diskshave been set by hand wheel 32. A resetting of the disks would then benecessary. Should handle be immediately operative when hand wheel 32becomes inoperative, then resetting of the stepped disks would beprevented.

Under conditions such as above, the setting of the disks 23, 24, and 25is either momentary or incorrect and time should be allowed to permitcorrect setting of the disks to a denite point accurately correspondingto the true load before handle 60 becomes operative to cause a record ofthe load to be made under control of the disks.

To provide a time lag between setting of the stepped disks and releaseof handle 60 for operation will give the operator an opportunity toreset the disks if not correctly or only momentarily set and will insurethat the disks are at the true load point with the scale in equilibriumor at rest before handle 5B is operative to cause a record to be made.

To release handle 60 after a lapse of a prescribed interval followingsetting of the stepped disks, lever which is provided with lockingfinger 55 has pivotally suspended therefrom the dash pot plunger 68moving within a cylinder 53, preferably of the pneumatic type with anadjustable vent 10. When magnet 50 attracts lever 55, the action of thelever is practically instantaneous and disk 58 is immediately locked toset disks 23, 25, and 25. Lever 55 which underlies lever 55 is urged tofollow the latter by a light spring 1i but due to the retarding effectof dash pot 53, the movement of lever 55 is delayed for a prescribedinterval which may be varied by adjustment of vent 13. After theprescribed interval, the lever 65 succeeds in moving into engagementwith block 56 of lever 55 and is thereby arrested. When this occurs,finger 54 releases disk 53 on shaft 62 and handle 5@ is ready foroperation.

lin order to inform the operator that handle 55 may now be operated, asignal lamp 12 at the front of the scale (see Fig. 1) lights up. Thecircuit for the lamp (see Fig. 5) is through a pair oi' contacts 13.These contacts (see Fig. 4)

are closed by lever 55 simultaneously with release oi ringer' 563 fromdisk 53 when the lever has reached its limit of movement in a clockwisedirection.

To further insure accuracy of operation, the first 45 degree movement ofthe handle 55 on its forward stroke is idle so far as effectingrecording operations is concerned and should any change in the scaleequilibrium or load condition occur in this period to render the settingof the stepped disks inaccurate, then the handle 53 `will be locked andthe stepped disks released for a resetting by hand wheel 32. To lock upthe handle 55 at the end of its initial 45 degree movement, under aboveconditions, the disk 53 is formed with a recess' 15 terminating at the45 point of the disk in a shoulder 15. Should the coincidence betweenfinger 41 of load pointer i2 and the photo cell control'be destroyed,then magnet 50 will be deenergized, and spring 56 will instantly rockboth levers 55 and 55 counterclockwise (as viewed in Fig. 4l) thusreleasing wheel 58 and interposing finger 64 in the path of shoulder 1Sof the disk 63. At the same time the contacts 13 will break and lamp 12will be extinguished to indicate that the handle 60 is not to be movedfurther forward. When the stepped disks are reset or the scaleequilibrium restored, then in the same manner as previously explained,disk 58 will be locked and handle 6U following a prescribed intervalreleased for operation as indicated by the lighting of signal lamp 12.

When the handle 80 is locked up at the end of its initial 45 degrees ofmovement, the operator should return it to the beginning of its forwardstroke. This will enable the nrst 45 degrees of the handle movement toagain sense thelocation of locking finger 64 to make sure that thesetting of the disks has not been changed after y record to be made ofthe controlling load. lTo

indicate to an observer that the conditions at this time requirecompletion of the forward stroke of handle 60, the signal lamp, 12remains lit although the photo cell control may not be in coincidencewith the pointer due to a-new load being applied. This result isobtained by the periphery of disk 63 following recess 15 coacting withthe lower end of finger 64 to maintain lever 65 in the position tovwhich it has been moved under control of magnet 50. Thus the lever 65will positively maintain contacts 13 closed to keep lamp 12 lit. At thesame' time, lever 65 will, through block 66, also maintain lever 55 inraised position with toothed nose 51 in locking engagedisks to thehalf-pound point of 'the total weight range nearest to the actual loadposition of the pointer I8 and of the stepped disks. For this purpose, atoothed disk 80 (see Figs. 2 and 3) is fast to sleeve shaft 22, withteeth 8| spaced apart successive distances corresponding to half-poundincrements of load. Coacting with teeth 8| is the rounded nose 82 of alever 83 pivotally connected to a depending rod 84 which at its lowerend bears on a cam 85 fast to shaft 62. During the first 45 degreemovement of shaft 62, the cam 85 is arcuately shaped and fails to movethe rod 84. After the 45 degree movement and for the remainder of thestroke of the shaft 62, the cam lifts the rod 84 to force the nose 82 ofthe lever 83 between successive teeth 8| of disk 80. The disk 80 is thuspositively locked and alined in an even halfpound position andcorrespondingly Vthe stepped disks 423, 24 and 25 are similarly lockedand alined at an even half-pound point of the total load range of thescale. The flexible belt connection 21 between shafts 29 and 22 yieldsto permit the slight alining movement of shaft 22 although shaft 29 isstill locked against movement.

The total printing range of the scale is 499% lbs. Accordingly, thehundreds order disk 25 has ve steps, each representing a 100 lbs.division of the total load range. I

1 Referring to Fig. 6, the steps, in counterclockwise order, are 25-0,25-I, 25-2, 25-3, and 25-4, with the numerals appended to character 25representing the hundreds division of the load.

The steps are at progressively decreasingradial distances from the axisof movement ofthe disks. Tens disk 24 has ten steps oorrelated'to eachhundreds step of disk 25. The ten steps are, in counterclockwise order,24-, `2li-I 24-9,

with the number appended to character 24 indicating the tens division ofthe load. These ten tens steps are also at progressively decreasingradial distances from the axis of the disks. Since there are fivehundreds steps, and ten tens steps to each hundreds step, the totalnumber of tens steps is fty. Each of these fifty tens steps representingthe same tens magnitude of the load is at the same radial distance fromthe axis of the disk.

The lowest order disk 23 is intended to control recording to thehalf-pound division. Accordingly, disk 23 (see Figs. 6 and' 9) hastwenty small steps 23-0, 23-1/2, 23-I, 23-I1/2 23-91/2 within the fieldof each tens step of disk 24. Steps 23-0, etc. are at progressivelydecreasing radial distances from the axis of the disks and stepscorresponding to the same magnitude within each neld of the tens stepare at the same radial distance.

When the disks have been set in accordance with the load, those steps ofthe disk representing the load will be located directly above sensingpins or feelers 90, 9 I, and 92, coacting respectively with the steps ofdisks 23, 24, and 25. For example, Wlth a load of 247.5 lbs. on thescale, the hundreds disk 25 will have step 25-2 above pin 92, tens disk24 will have a step 24-4 located above pin 9 I, and disk 23 will have astep 23-11/2 Vabove pin 90.

Pins 90, 9|, and l92 move into engagement with the steps representingthe load to respectively control recording members 93, 94 and 95 whichlocate type for printing the load at the printing position, indicated byarrow P in Figs. 9, l0, and 11.

Fast to one side of recording members 93, 94, and 95 are cam elements96, 91, and 98, respectively, while fast to the opposite side of themembers are stepped sectors 99, |00, and |0i, respectively.

Each of the sectors has a collar |02 extending therefrom which houses aspiral spring |03 connected at its outer end to the inside wall of thecollar and at its inner end to a hub |03 fast to the shaft 62. Shaft 62,through springs |03,

yieldingly drives each 'assembly of recording member, cam element, andstepped sector independently of the otherassemblies. The assemblies mayalso be stopped independently of each other in different relativepositions while the shaft 62 completes its forward stroke.

Cam elements 96, 91, and 98 are respectively aengaged by pins |04, |05,and |06, which may be termed, for convenience, actuating pins. Thesepins are each yieldinglyconnectedI through a spring |01 with sensingpins 90, 9|, and 92, respectively. Springs |01 normally hold lugs |08 onthe actuating pins engaged with the top of the lugs |09 on the companionsensing pins, as shown in Fig. 6.

All the pins are slidably mounted for vertical movement in a frame pieceH0. Springs connecting the actuating pins with frame ||0 hold the latterpins in Contact with their respective cam elements. The cam elements arespirally curved, their radius vectors gradually increasing-in thedirection of movement of the recording assemblies during the forwardstroke of the handle 60 and its shaft 62. The stepped sectors 99, |00,and I0| are of less height than and generally follow the contour of theassociated cam elements. The lower ends of the actuating pins are abovethe lower ends of the sensing pins. yWhen both pinsv of a set are freeto move upwardly` without interference by the stepped disks 23, 24, or25, then the lower end 'J of the sensing pin just clears the steppedsector while the lower end of the companion control pin is contactingthe spiral cam element. However, when a sensing pin has been movedup-Wardly into engagement with a step on a control ,disk, then the sensingpin can no longer follow its companion actuating pin upwardly and spring|01 will yield while the recording assembly continues to move and theactuating pin continues to rise stretching spring |51 until the shoulderat the end of the step on the associated stepped sector below thesensing pin encounters the side of the arrested sensing pin. The entirerecording assembly will thus be arrested while shaft 52 completes itsforward stroke.

Since the first 45 degree movement of shaft 62 is set apart for sensingthe position of the stop nger 64, as previously explained, and is not tohave any recording control, the camv elements are arcuately shaped forthe rst 45 degrees of their periphery so that the actuating pins willnot rise during this portion of the stroke of shaft s2.

After the cam elements move `through 45 degrees, their peripheriesgradually rise and lift the actuating pins. Similarly, initial 45degrees of the stepped sectors are arcuately shaped. While the camelements begin to lift the control pins at the end of their 45 degreemovement, the arc portions of the stepped sectors continue as far as thefirst shoulder which defines the zero position of a recorder assembly.The sensing pin, however, after the 45 degree point -of the steppedsector passes, rises with the associated actuating pin now being raisedby its cam element. Should the sensing pin during its rise be stopped byengagement with a zero step on the control disk, then it will encounterthe rst shoulder of the stepped sector and stop the associated recordingmember with O type at the printing position P. Between successiveshoulders of the stepped segments, the steps are arcuate and do notcontact the sensing pins.

The manner in which the control and sensing pins operate to position therecording elements will now be specically explained with the previouslyassumed example of a 2471/2 pound load.

Referring toFlg. 9, since disk 23 has twenty Y' differential steps,representing 0 to 91/ lbs., the

stepped sector 99 has twenty corresponding differential steps 99-Sterminating in twenty shoulders 99-0, 1/2, 91/2 and type carrier 493 hastwenty type for printing to 91/2 lbs. Shaft 62 being in motion, tliroughspring |03, it rocks the assembly of rectrding member 93, cam element96, and stepped sector 99 clockwise.

The initial 45 degree portion of cam 96 ds not lift the actuating pin|04. As soon as this portion passes the control pin, the cam starts tolift the actuating pin and through spring |01 to lift sensing pin 90.The lower end of the pin is raised suiciently to clear .the part of thestepped segment 99 preceding the rst shoulder 99-0. The cam 96 continuesto rotate and lift the pin |04 to correspondingly lift the' sensing pin90 successively above and clear of the steps 99-S. When pin 90 clearsshoulder 99--1, it comes in contact at its uppei endv with step23--11/2' on disk 23 and is prevented from rising further. The unitrecording assembly continues to move, pin |04 rising and stretchingspring |01, until the shou1der 99-11 encounters the left side of the pin9|).- 'I'his stops tlie entire unit recorder assembly in the positionshown in Fig. 9 with the type for printing 11/2 located at printingposition P.

Referring to Fig. 1o, th tens control disk 24' has ten diil'erentialsteps and therefore stepped sector |00 has ten corresponding steps H10-Sterminating in shoulders IDG-0, 2 9 and recording member 94 has ten typefor printing 0 to 9. When sensing, pin 9| is raised by the lifting ofthe companion pin into contact with step 24-4 of the tens disk, it isunable to rise further and is engaged by shoulder |00 -4 of the steppedsector to stop the recording member 94 with type legend 4 at printingposition, as shown in Fig. 10.

Similarly, pin 92 of the hundreds order (see Fig. 11) is raised byactuating pin |06 to engage step 25--2 of the hundreds disk 25 andengages the shoulder |0|2 of-the stepped segment |0| to stop recordingmember/95 with type legend 2 at printing position. As control disk 25has only ive differential steps, the sector |0| has five steps andshoulders and recording member 95 has five type 0 to 4.

The hundreds, tens, and units recording members are now located inposition to print 2471/2 which is the load on the scale.

respondingly largeY number of type to print the V smaller fractions ofthe load yet have a movement from one,type to another multiplied withrespect to the diierentials between the steps of the control disk sothat one type will not be too close Ato the adjacent one to interferewith a clear imprint taken from the latter. For example, the units disk23 has twenty very small diierential steps, the sensing pin 90 hascorrespondingly small diierential motion, and the recording member 94has a rocking movement of about four times the differential motion ofthe sensing pin to locate its twenty type successively at printingposition. 'Ihe steps of the stepped sectors may be made longer if thestroke of shaft 62 is increased to control a still larger differentialmovement of the recorder from the same small differential motion of thesensing pins.

Another advantage of the described construction is that the recordingassemblies are brought to a gradual stop so that the engagement of thestepped sectors with the sensing pins is effected without impartingshock to the pins tending to bend them and to thrust them violentlyagainst the steps of the control disk which would result- 'in injurythereto, particularly to the fine steps of disk 23.

To understand the manner in which the recorder assemblies are graduallyarrested, reference may be had to Fig. 10, showingl the tens order. Whenpin |05 raises sensing pin 9| suiilciently to clear the shoulder |00-3,the sensing pin engages the step 24-4 of the control disk 24 and is heldthereby against a further rise., The recording assembly, however,continues torotate and cam 91 continues to lift pin |05. However, thelower end of spring |01 is now stationary, being anchored to the sensingpin which is being held against movement and therefore the rise of pin|05 will be resisted by the spring, which in turn transmits thisresistance as a frictional braking force applied to cam 91. Theresistance of the spring increases as the cam 96 continues to rotate andraise pin |05 to stretch the spring further. Accordingly, by the timeshoulder |00-4 encounters the side of pin 9|, the motion of therecording assembly has been considerably decelerated.

Still another advantage is that the recording assemblies are positivelyarrested by the sensing pins at accurately located and sharply definedpoints of the movement of the assemblies. This follows from the factthat the shoulders terminating the steps of the stepped sectors whichengage the sensing pins to stop the recorder assemblies may beaccurately spaced and machined flat to provide iiush'contact with thefiat sides of the sensing pins and cause the assemblies to stop withoutplay, the springs |03 holding the shoulders rmly in contact with thepins.

By reason of the fact that the steps themselves between the shouldershave no contact with the sensing pins, the surface of the steps need notbe Afinished or made with any nicety of manufacture.

Still another advantage is that the sensing pins are never positivelythrust against the steps of the control disks but are only yieldinglyengaged therewith by springs |01 even when contacting a shoulder of thestepped sector. The possibility of the pins damaging the stepped controldisks or bending them is therefore reduced to a minimum.

Of the 180 degrees of movement of shaft 62, the first 45 degrees has noeffect on the sensing and actuating pins and the next 125 degrees isrequired to move the recording assemblies the maxlmum distance which maybe necessary if the 9 type is to be located at printing position. Thisleaves 10 degrees for printing the record, feeding the inking ribbon,"or other Iauxiliary operations which may be required.

Referring to Figs. 1, 2 and 3, the means for taking an impression of theload from recording members 93, 94, and 95 comprises a chute ||5 toreceive a card H6 below an inking ribbon ||1 and above the hammer end |8of an arm ||9 freely rotatable on a shaft |20. Fast to shaft |20 is abell crank lever |2| connected by a light spring |22 to arm I I9, thespring holding the arm ||9 in contact with a stud |23 on the lever |2|.

' The upper end of the bell lever is engaged by `a l sure exerted on arm|25 by spring |26.

end of latch lever |29 rides on a cam |33 fast onV shaft 52 and which isarcuately shaped until thev cam |24 on shaft 62 at the beginning of thefor- Ward stroke of the shaft and when so engaged is in the positionshown in Fig. 3 in which through spring |22 it holds the arm ||9 andhammer IIB retracted from the record card H6.

Also fast to shaft |20 is an arm |25 normally urged to the left (asviewed in Fig. 3) by a spring |26 but held against such movement byengagement of a pawl |21 thereon with the nose |28 of a latch lever |29.Aspring |30 connected to lever |29 holds it in latching engagement withpawl |21. Pawl |21 is pivoted to arm |25 and urged clockwise by spring|3| into contact with a lug |32 on the arm so that it will not yieldunder the pres- The rear last ten degrees in which it is provided with alug |34. Fig. 3 shows the initial positions of the above parts. Sincebell lever |2 is fast to shaft |25 which is maintained in the initialposition by the latching of arm |25 also fast to the shaft, the belllever is unable to follow cam |24. When the shaft has moved 170 degrees,during which period the type members are set, the low point of cam |24is above and clearly spaced from the bell lever |2| which remains ininitial position. After shaft 62 has moved 170 degrees, the lug |34 oncam |33 engages the latch lever |29 and rocks the nose |28 thereof freeof pawl 21, releasing arm |25 for actuation to the left by spring |26.Shaft |20 and bell lever |2| are thus rocked counterclockwise and stud|23 on the lever positively moves the arm ||9 upwardly. Before thehammer l |8 reaches the record card H6, lever |2| is stopped byengagement with a fixed pin |36. Arm H9, however, being rotatable onshaft |20 is carried further by its own momentum to strike the card I6sharply and produce a clear imprint thereon from the type and isimmediately retracted by spring E22.

On the return stroke of shaft 62, the record taking means is restored toinitial position. Cam |24 on the return stroke engages bell lever 2| torock it clockwise, thereby through shaft |20 moving arm |25 to theright. The pawl |21 is permitted by spring I 3| to yieldcounterclockwise in order to pass the nose |28 of latch lever |29 and berelatched thereby.

The return stroke of shaft 62 returns the recording assemblies toinitial position, meanwhile releasing the sensing pins from engagementwith stepped disks23, 24, and 25 and leaving the latter free for anothersetting by operation of hand wheel 32.

An inclined edge |40 on locking disk 63 cams the locking finger B4upwardly on the return stroke and permits the disk to move to itsinitial position. The finger 64 and lever 65 are returned by spring 56acting through armature lever 55 to the position shown in Fig. 4, andthe circuit through the lamp 12 is broken.

A brief summary of the operations follows:

' A load is applied to the scale, moving pointer I8 to a positioncorresponding to the load, which is indicated on chart I9. 'Ihe operatornow rotates hand wheel 32 to rotate sleeve shaft 22 carrying steppeddisks 23, 24, and 25 which are adapted to translate the load intodifferential step equivalents. When the disks have been moved to aposition corresponding to the load, a finger 41 on pointer I8 interceptsa beam of light directed from lamp 35 to photo cell 33, both carried bythe disks.

The cell being deenergized, relay 43 permits switch 45 to close andcomplete a circuit through magnet 50 which operates lever 55 to arrestdisk 58 on shaft 29 geared to hand wheel 32. The latter is now lockedand cannot move the stepped disks which are now at the load point. Afterthe lapse of a prescribed interval to make sure that the setting of thedisks has been correct, the lever 65 unlatches the recording shaft 62and causes signal lamp 12 to light up and indicate that handle 60 onshaft 62 is ready for operation. During the first 45 degrees of theforward stroke of the handle, the recess 15 in disk 63 on shaft 62 movesbeneath finger 64 on lever 65 and if the finger has dropped during thisinterval because of a wrong setting of the stepped disks, it will engageshoulder 16 at the end of the recess and stop operation of shaft 62until the hand wheel 32 is again operated to correctly reset the disks.

After shaft 62 moves 45 degrees, the cam elements 96, 91, and 98, raiseactuating pins |04, |05, and |06 to move the sensing pins 90, 9|, and 92in engagement with the steps on disks 23, 24, and 25 representing theload. The recording members 93, 94, and are stopped by the sensing pinsin positions corresponding to the load. The final portion of the forwardstroke of shaft 62 causes hammer H8 to eiiect printing by the recordingmembers on a card H6 inserted in chute H5 at the front of the scale.'

While there has been shown and described and vpointed out thefundamental novel features of the invention as applied to a singlemodification, it will be understood that various omissions andsubstitutions and changes in the form and details of the deviceillustrated and in its operation may be made by those skilled in the artwithout departing from the spirit of the invention. Itis the inventiontherefore to be limited only as indicated by the scope of the followingclaims.

What is claimed is asfollows:

1. In a machine including weighing mechanism; the combination ofrecording means in- 'cluding a movable device having stop shouldersextending progressively increasing distances from the device, a cammovable' in synchronism with said device, load translating means movablein accordance with operation of the load and having an elementrepresentative of the load, a sensing member, and means operated by saidcam for moving said sensing member progressively above said stopshoulders during movement of the cam and device until said memberengages aforesaid element and is arrested thereby to intercept one ofthe shoulders of the device to differentially set 'the latter inaccordance with the load.

2. In a machine including weighing mechanism; the combination ofrecording means including a rotatable device havig peripherally spacedstop shoulders at progressively increasing radial distances from theaxis of the device, a spiral cam rotatable in synchronism with saiddevice, means movable in accordance with operation of the weighingmechanism andhaving an element representative ofl the load, a sensingmember progressively raised by said cam above the successive stopshoulders until the sensing member engages said element and is arrestedthereby to intercept the shoulder following the last one above which ithas' been raised to thereby set the rotatable device in accordance withm the load. I,

3. In a machine including weighing mechanism; the combination ofrecording means inmechanical equivalents, a sensing iinger for sensingthe elements, a companion actuating finger yieldingly connected to thesensing finger and operated by said camto progressively and yield-Vingly actuate the sensing member above said stop shoulders until thesensing member engages' a disk element and is` arrested therebytointercept' the stop vshoulder following the last one above which it hasbeen raised to thereby set the ro-` tatable device in accordance withthe load.

4, In a machine including loadweighing mechanism; the combination of aload translator settable in accordance with operation of the weighingmechanism,l a recording device including means having a stop shoulder,an actuator for operating the device, a sensing lmembermovable to engagethe translator`^ and stopped thereby in position to intercept saidshoulder and positivelyarrest operation of the recording device. amovable actuating member, an impositive driving connection between theactuating member and the sensing member for moving the sensing memberinto contact with the translator, and means movable in synchronism withthe first-mentioned means and operatively connected thereto for movingthe actuating member.

5. In a machine including load weighing mechanism; the combination of aload translator comprising a rotatable disk having peripherally spacedelements representative of the load and having a zero position relativeto the Weighing mechanism, a source of wave energy, a device sensitiveto wave energy emanating from the source, an`element for varying theflow of radiant energy from the source to said device upon the diskarriving at said relative zero position, electrical means controlled bythe said device for stopping the rotation of the disk upon aforesaidvariation of energy flow to said device, recording means, and anactuator for differentially operating the recording means under controlof the elements of said disk.

6. In a machine including load weighing mechanism; the combination of aload translator comprising rotatable disks of different denominationalorders having a common zeroy position relative'to the weighingmechanism, each disk having peripherally spaced elements forinterpreting its denomination of the load as mechanical equivalents, anactuator for rotating the disks, a photo cell device controlled byoperation of the weighing mechanism for stopping operation of the disksby the actuator upon the ldisks reaching aforesaid relative zeroposition, dierentially operable recording elements of differentdenominational orders, and control members, one for each disk forsensing the elements of said diskand controlling operation of therecording elements in accordance with the interpretation of the load bythe disk elements;

'7. In a machine including load Weighing mech- "anism: the combinationof 'a load translator including a set of rigidly connected and commonlylrotatable stepped disks, each disk representing a fferent denominationof the load and having di erentially arranged steps for interpreting itsdenomination of the load as mechanical equivalents, a photo cell and a'source of energy there for commonly carried by said disks, an elementfor varying the energy ow from said source to change energization ofsaid device upon the disks reaching a position corresponding to theload, electrical means controlled by said cell upon its change inenergization for interrupting rotation of the stepped disks, recordingmeans, an actuator for differentially actuating the recording means,sensing members, one foreach disk, for engaging the steps of its diskand differentially set thereby andV rotatable elements operativelyconnected to the recording means and engaged by the sensing members tointerrupt operation of the recording means by the actuator aftermovements of the recording means proportional to the differentialsetting of the sensing members. 8. In a machine including load weighingmechanism; the combination of a load translator including a series ofstepped disks arranged side by side and rigidly connected for commonrotation, a tube passing through said disks and secured thereto, asource of wave emanations carried by the disks adjacent one end of thetube, a -condenser lens at said end of the tube, a n opaque wall at theother end having a hole towards which the lens converges the-waveemanations from said source, a photo cell carried by the disks in frontof the opaque wall and energized by the Wave emanations passing throughsaid hole, an element interposed by the weighing mechanism between thecell and the hole to intercept flow of wave energy to said cell anddeenergize the latter, operating mea-ns for rotating the disks, amagnet, meansifor energizing the magnet upon deenergization of the cell,a lock operated by the magnet to interrupt operation of the disks bysaid operating means, recording members, and controls for engaging thesteps of said disk to differentially set the recording members inaccordance with the interpretation of the load by said steps.

9. In a machine including load weighing mechanism; the combination of aload translator comprised of separate parts, each for translating adifferent denominational order of the load, an actuator for operatingthe load translator, means for sensing the position of the weighingmechanism, a device controlled by said means for automatically stoppingoperation vof the translator upon the latter being set in accordancewith the load, recording means, means for operating the recording meansunder control of the translator 'and including provisions for moving thetranslator parts as a rigid unit independently of the aforesaid actuatorto an even load point corresponding to the smallest equivalent step ofthe translator.

10. In a machine including load weighing mechanism; the combination of aload translator, driving means other than and separate from the Weighingmechanism for moving the translator to a position corresponding to theload, a recording device, driving means for actuating the recordingdevice under control of the translator, means for locking the drivingmeans of the recording device during operation of the translator drivingmeans, and means automatically controlled by the weighing mechanism uponthe translator reaching the load position for unlocking the drivingmeans of the recording device and automatically rendering the translatordriving means ineffective to drive the translator.

11. In a machine including load weighing mechanism; the combination of aload translator, driving means other than and separate from the Weighingmechanism for moving the translator` to a position corresponding to theload, a recording device, driving means for differentially setting therecording device under control of the translator according to the load,means for locking the driving means of the recording device duringoperation of the translator driving means, and automatic meansautomatically set in operation under control of the weighing mechanismupon the translator reaching the load position for automaticallystopping the actuation of the translator by its driving means and forreleasing the driving means of the recording device for operation.

12. In a machine including weighing mechanism; the combination of adevice for sensing the position of the Weighing mechanism, means formoving the device independently of the weighing mechanism to loadsensing position, auxiliary mechanism, an intercontrol between thedevice and the auxiliary mechanism, and means for delaying eifectiveoperation of the intercontrol until after a lapse of time followingsensing of the Weighing mechanism by said device.

13. In a machine including weighing mechanism; the combination of a loadtranslator, an atcuator for moving the translator, a device forinterrupting movement of the translator when the latter has been movedto a position corresponding to the load, recording mechanism, means forsetting the recording mechanism under control of the translator, a lockfor restraining voperation of the setting means, means forreleasposition, and provisions for restoring locking coaction betweenthe lock and setting means after the latter has started operation andbefore it effects setting of the recording mechanism upon the devicedeparting from load position.

15. In a machine including load weighing mechanism; the combination of aplurality of denominational order stepped load translating memberssettable under control of the weighing mechanism according to the load,each translating member having control steps of different effectiveheights to represent different values within the order of said lattermember, sensing devices, one for each member, each device including asensing part and a stop part, means for moving each device through aforward stroke for engaging the sensing part with a control step of theassociated translating member to thereby arrest the stop part at adifferential point of said forward stroke directly by and uponengagement of said sensing part with the control step, and auX- iliarymechanism including movable denominational order elements, eachcorrelated to one of said sensing devices and each having stop shouldersprogressively increasing in eifective height in the direction ofmovement of said element, and means for diiferentially moving theelements until they are arrested in diiferential positions correspondingto the load by engagement of a shoulder of each of the elements with thestop part of the associated sensing device while the sensing part ofsaid device is still engaged with said control stop and is maintainingits stop part at its differential point of arrest.

16. The machine such as dened in claim 15,

lsaid means for moving the sensing devices and said means for moving thedenominational order elements being synchronously and coincidentallyoperated.

17. The machine as defined in' claim 15, the sensing part and the stoppart of each said device being respectively the forward and rear ends ofa rigid finger.

18. The machine as defined in claim 15, said sensing device includingyieldable means for maintaining the sensing part of each said device inengagement with the control step of the asso- Yoperating means after thedevice reaches loadciated member and thereby maintaining the stop 7')part in its differential position of arrest.

CHARLES R. DO'I'Y.

